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Which will from maximum boiling azeotro...

Which will from maximum boiling azeotrope ?

A

`HNO_(3)+H_(2)O` solution

B

`C_(2)H_(5)OH + H_(2)O` solution

C

`C_(6)H_(6)+C_(6)H_(5)CH_(3)` solution

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
The solutions (liquid mixtures) which boils at constant temperature and can distil unchanged in composition are called azeotropes. Solution of `HNO_(3)` and `H_(2)O` will form maximum boiling point azeotrope because they have a composition of having maximum boiling point. Maximum boiling azeotropes show negative deviation from Raoult's law.
`{:(,"Composition (%)","Boiling point"),(HNO_(3)," 68.0",359K),(H_(2)O," 32.0",373 K):}`
Boiling point of the azeotrope of these two solutions is 393.5 K.
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